Patents by Inventor David Campo

David Campo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250298004
    Abstract: A method to manufacture a test strip for measuring specific gravity of a urine sample, the method including successively providing a polyelectrolyte in a first solution, the polyelectrolyte being poly(methyl vinyl ether-alt-maleic anhydride), adding to the first solution a base to neutralize the polyelectrolyte and to bring the first solution at a pH between 10 and 11, adding to the first solution a buffering agent to bring and maintain the first solution at a pH between 7.0 and 7.5, dipping a paper strip into the first solution, and dipping the paper strip into a second solution comprising a pH sensitive color indicator.
    Type: Application
    Filed: March 6, 2025
    Publication date: September 25, 2025
    Inventors: Sounderya NAGARAJAN, David CAMPO
  • Publication number: 20230380759
    Abstract: A urine analysis device for monitoring a user's compliance with a treatment including regular intake of a drug, the device including a collection channel for collecting the user's urine when the user urinates in a toilet and an analysis module configured to detect the presence of an analyte in the urine collected by the collection channel, the analyte being an active ingredient of the drug or a metabolite of the active ingredient, the analysis module being configured to determine a concentration of the analyte in the collected urine or a quantity related by a monotonic function to the concentration of the analyte in the urine.
    Type: Application
    Filed: October 20, 2021
    Publication date: November 30, 2023
    Inventors: Sounderya NAGARAJAN, Christelle BARAKAT, David CAMPO
  • Patent number: 11399726
    Abstract: A device for collecting cardiovascular data relating to an individual user, comprising a control unit assembly with an electronic controller and a pneumatic unit, an arm band having an inflatable bladder and configured to surround the left arm of the individual, wherein the pneumatic unit has a pump and a pressure sensor, and is configured to inflate and deflate the inflatable bladder, so that the electronic controller can determine the arterial pressure of the user, the device further comprising an acoustic sensor being coupled to the external wall of the arm band and having a sensitive side such that in use configuration, the sensitive side is adjacent to the chest of the user, whereby at least a cardiovascular timing characteristic can be inferred from signals from the acoustic sensor and the pressure sensor. The device may also comprise a set of contact electrodes to provide additionally ECG functionality.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: August 2, 2022
    Assignee: WITHINGS
    Inventors: David Campo, Bastien Rechke, Xianzhi Zhang, Mélanie Patel Alsberghe, Victor Ting, Olivier Bienvenu
  • Patent number: 10952625
    Abstract: An apparatus, method and computer program, the apparatus comprising: processing circuitry and memory circuitry including computer program code, the memory circuitry and the computer program code arranged to, with the processing circuitry, cause the apparatus to: obtain an audio signal from an audio sensing means wherein the audio signal comprises a subject's heartbeat; obtain a further signal from a further sensing means wherein the further signal also comprises the subject's heartbeat; use the further signal to identify individual heart beats in the audio signal; and analyse the individual heartbeats of the audio signal to enable the audio signal to be classified.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: March 23, 2021
    Assignee: WITHINGS
    Inventors: Ugo Marchand, David Campo
  • Publication number: 20200121197
    Abstract: A device for collecting cardiovascular data relating to an individual user, comprising a control unit assembly with an electronic controller and a pneumatic unit, an arm band having an inflatable bladder and configured to surround the left arm of the individual, wherein the pneumatic unit has a pump and a pressure sensor, and is configured to inflate and deflate the inflatable bladder, so that the electronic controller can determine the arterial pressure of the user, the device further comprising an acoustic sensor being coupled to the external wall of the arm band and having a sensitive side such that in use configuration, the sensitive side is adjacent to the chest of the user, whereby at least a cardiovascular timing characteristic can be inferred from signals from the acoustic sensor and the pressure sensor. The device may also comprise a set of contact electrodes to provide additionally ECG functionality.
    Type: Application
    Filed: March 13, 2018
    Publication date: April 23, 2020
    Applicant: WITHINGS
    Inventors: David Campo, Bastien Rechke, Xianzhi Zhang, Mélanie Patel Alsberghe, Victor Ting, Olivier Bienvenu
  • Publication number: 20190387987
    Abstract: A method to collect cardiovascular data relating to an individual user (U), in a system comprising an acoustic sensor (4) configured to be coupled to the chest of the user, an arm band (2) having an inflatable bladder (53) configured to be placed around at a predefined position around a upper limb of the user, for example the left arm (BG), a pneumatic unit with at least a pump (7) and a pressure sensor (61), configured to inflate and deflate the inflatable bladder, an arterial blood path (P) being defined from the heart to the left arm (BG) of the user,the method comprising a set of steps named PTT procedure: /A1/-acquiring acoustic signals at the acoustic sensor, /A2/-acquiring pressure signals at the pressure sensor, representative of pressure occurring at the brachial artery, /S0/-inflate the bladder at a predetermined pressure (PT1) /S1/-determining aortic valve closing instant T1(k) from acoustic signals, /S2/-determining subsequently, from pressure signals, a characteristic point (M2) of the pressure s
    Type: Application
    Filed: March 13, 2018
    Publication date: December 26, 2019
    Applicant: WITHINGS
    Inventors: Antoine MERLOT, David CAMPO, Virginie VISSAC, Haïkel BALTI
  • Publication number: 20190329166
    Abstract: An air purifying system includes a housing receiving at least partially therein a filter, a weighing system at least selectively connected to the filter, and an actuating system adapted to move the filter between a first position relative to the housing and a second position relative to the housing. A controller is configured to calibrate the weighting system when the filter is in the first position, and determine a weight of the filter when the weighting system is in the second position. A method for weighting in-situ a filter in an air purifying system is also presented.
    Type: Application
    Filed: April 26, 2019
    Publication date: October 31, 2019
    Applicant: WITHINGS
    Inventors: Ianis Oueslati, David Campo
  • Patent number: 10441178
    Abstract: Video monitoring device comprising a computing unit, a camera, a communication interface, and a volatile organic compounds sensor configured to measure at least a concentration of organic compounds in a room of interest, said computing unit being configured to record the concentrations of organic compounds reported by the volatile organic compounds sensor, and configured to send images taken by the camera and volatile organic compounds concentrations to a remote entity, such as a smartphone over a wireless link.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: October 15, 2019
    Assignee: WITHINGS
    Inventors: David Campo, Stéphane Carpentier, Amaury Dumoulin, Nadine Buard, Eric Carreel
  • Publication number: 20190192015
    Abstract: An apparatus (1) comprising a cuff configured to be worn around an upper arm of a user (75), a first sensor (S1) comprised in the cuff and configured to receive sounds through a side of the chest of the user, and a second sensor (S2) configured to receive sounds and to be movable with regard to the cuff and configured to be placed at a front side of the user's chest and used in conjunction with the first sensor.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 27, 2019
    Applicant: WITHINGS
    Inventor: David Campo
  • Publication number: 20190167130
    Abstract: An apparatus, method and computer program, the apparatus comprising: processing circuitry and memory circuitry including computer program code, the memory circuitry and the computer program code arranged to, with the processing circuitry, cause the apparatus to: obtain an audio signal from an audio sensing means wherein the audio signal comprises a subject's heartbeat; obtain a further signal from a further sensing means wherein the further signal also comprises the subject's heartbeat; use the further signal to identify individual heart beats in the audio signal; and analyse the individual heartbeats of the audio signal to enable the audio signal to be classified.
    Type: Application
    Filed: December 6, 2018
    Publication date: June 6, 2019
    Applicant: WITHINGS
    Inventors: Ugo Marchand, David Campo
  • Patent number: 9939309
    Abstract: Electronic scale including four feet, four strain gauges, an electronic control unit and a display, where the gauges are combined in pairs in first and second Wheatstone bridge type circuits, where a first intermediate-point of the bridge is selectively connected via a switch to an intermediate voltage source and where the first and second outputs of the amplifiers are summed by the electronic control unit in order to deduce therefrom a weight for an object present on the device, with indication for the user of off-center condition on the scale. Weighing method implemented in such a scale.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: April 10, 2018
    Assignee: WITHINGS
    Inventors: Eric Carreel, Nadine Buard, Xavier Debreuil, Victor Ting, David Campo, Guillaume Faussard, Florent Dusanter
  • Publication number: 20170065185
    Abstract: Method to determine the arterial stiffness of an individual user (U) standing on a personal electronic scale having a top surface with at least three conductive pads on one of the left or right side of the scale, /a/—acquiring weight variations, and extracting therefrom a ballistocardiogram of the user's heart beat, /b/—acquiring impedance plethysmography signals across one of the foot of the user, and extracting therefrom a blood pulse signal at the foot, /c/—calculating a time delay (DT) between the heart beat and the blood pulse signal arriving at the foot, /d/—deducing therefrom a value of the arterial stiffness of the user
    Type: Application
    Filed: April 30, 2015
    Publication date: March 9, 2017
    Inventors: Nadine Buard, David Campo, Roger Yu, Frederic Techer, Pierre Barrochin, Eric Carreel, Ramon Pallas Areny, Jaime Oscar Casas Piedrafita
  • Patent number: 9574995
    Abstract: Device for measuring the concentration of a predetermined gas, in particular CO2, comprising a cavity, a light source emitting light rays within a basic spectral range including visible and infrared, a detector configured to receive a portion of the light rays within a first predefined spectral range corresponding to high absorption of the predetermined gas, a photodiode configured to receive a portion of the light rays within a second predefined spectral range corresponding to low absorption of the predetermined gas, a control unit configured to calculate the concentration of the predetermined gas by comparing the radiant power received by the detector to the radiant power received by the photodiode.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: February 21, 2017
    Assignee: WITHINGS
    Inventors: Cédric Hutchings, Nadine Buard, David Campo, Brice Brac de la Perriere, Pierre Barrochin, Xavier Debreuil
  • Publication number: 20160317043
    Abstract: Methods of determination of the blood pressure, determination of a heart stroke volume, determination of the state of stress or relaxation of a user, with use of a ballistocardiogram signal reflecting the user's heart beats, with a measure of characteristic amplitude of ballistocardiogram signal, and measure for each couple of consecutive heart beats, beat time intervals DeltaHB(i) between successive heart beats, extracted from a ballistocardiogram signal or from an impedance plethysmography signal measured at the user's foot, leading to determination of a heart rate variability index, over at least six successive heart beats, leading to determination of mean arterial pressure, leading to determination of state of relaxation or stress of the user.
    Type: Application
    Filed: April 30, 2015
    Publication date: November 3, 2016
    Inventors: David Campo, Nadine Buard, Ghaleb Karam, Eric Carreel
  • Publication number: 20160015278
    Abstract: Video monitoring device comprising a computing unit, a camera, a communication interface, and a volatile organic compounds sensor configured to measure at least a concentration of organic compounds in a room of interest, said computing unit being configured to record the concentrations of organic compounds reported by the volatile organic compounds sensor, and configured to send images taken by the camera and volatile organic compounds concentrations to a remote entity, such as a smartphone over a wireless link.
    Type: Application
    Filed: July 21, 2015
    Publication date: January 21, 2016
    Applicant: WITHINGS
    Inventors: David Campo, Stéphane Carpentier, Amaury Dumoulin, Nadine Buard, Eric Carreel
  • Publication number: 20150338339
    Abstract: Device for measuring the concentration of a predetermined gas, in particular CO2, comprising a cavity, a light source emitting light rays within a basic spectral range including visible and infrared, a detector configured to receive a portion of the light rays within a first predefined spectral range corresponding to high absorption of the predetermined gas, a photodiode configured to receive a portion of the light rays within a second predefined spectral range corresponding to low absorption of the predetermined gas, a control unit configured to calculate the concentration of the predetermined gas by comparing the radiant power received by the detector to the radiant power received by the photodiode.
    Type: Application
    Filed: December 30, 2013
    Publication date: November 26, 2015
    Inventors: Cédric Hutchings, Nadine Buard, David Campo, Brice Brac de la Perriere, Pierre Barrochin, Xavier Debreuil
  • Publication number: 20150160068
    Abstract: Electronic scale including four feet, four strain gauges, an electronic control unit and a display, where the gauges are combined in pairs in first and second Wheatstone bridge type circuits, where a first intermediate-point of the bridge is selectively connected via a switch to an intermediate voltage source and where the first and second outputs of the amplifiers are summed by the electronic control unit in order to deduce therefrom a weight for an object present on the device, with indication for the user of off-center condition on the scale. Weighing method implemented in such a scale.
    Type: Application
    Filed: July 19, 2013
    Publication date: June 11, 2015
    Inventors: Eric Carreel, Nadine Buard, Xavier Debreuil, Victor Ting, David Campo, Guillaume Faussard, Florent Dusanter